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- #include <stdio.h>
- #include <unistd.h>
- #include <string.h>
- #include <errno.h>
- #include <limits.h>
- #include <sys/stat.h>
- static int usage()
- {
- fprintf(stderr,"mkdir [OPTION] <target>\n");
- fprintf(stderr," --help display usage and exit\n");
- fprintf(stderr," -p, --parents create parent directories as needed\n");
- return -1;
- }
- int main(int argc, char *argv[])
- {
- int ret;
- if(argc < 2 || strcmp(argv[1], "--help") == 0) {
- return usage();
- }
- int recursive = (strcmp(argv[1], "-p") == 0 ||
- strcmp(argv[1], "--parents") == 0) ? 1 : 0;
- if(recursive && argc < 3) {
- // -p specified without a path
- return usage();
- }
- if(recursive) {
- argc--;
- argv++;
- }
- char currpath[PATH_MAX], *pathpiece;
- struct stat st;
- while(argc > 1) {
- argc--;
- argv++;
- if(recursive) {
- // reset path
- strcpy(currpath, "");
- // create the pieces of the path along the way
- pathpiece = strtok(argv[0], "/");
- if(argv[0][0] == '/') {
- // prepend / if needed
- strcat(currpath, "/");
- }
- while(pathpiece != NULL) {
- if(strlen(currpath) + strlen(pathpiece) + 2/*NUL and slash*/ > PATH_MAX) {
- fprintf(stderr, "Invalid path specified: too long\n");
- return 1;
- }
- strcat(currpath, pathpiece);
- strcat(currpath, "/");
- if(stat(currpath, &st) != 0) {
- ret = mkdir(currpath, 0777);
- if(ret < 0) {
- fprintf(stderr, "mkdir failed for %s, %s\n", currpath, strerror(errno));
- return ret;
- }
- }
- pathpiece = strtok(NULL, "/");
- }
- } else {
- ret = mkdir(argv[0], 0777);
- if(ret < 0) {
- fprintf(stderr, "mkdir failed for %s, %s\n", argv[0], strerror(errno));
- return ret;
- }
- }
- }
-
- return 0;
- }
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